Patent
Power line conditioner using cascade multilevel inverters for voltage regulation, reactive power correction, and harmonic filtering
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TLDR
In this paper, a power line conditioner using cascade multilevel inverter used for voltage regulation, reactive power (var) compensation and harmonic filtering, including the control schemes for operating the cascade inverter for voltage control in distribution systems.Abstract:
A power line conditioner using cascade multilevel inverter used for voltage regulation, reactive power (var) compensation and harmonic filtering, including the control schemes for operating the cascade inverter for voltage regulation and harmonic filtering in distribution systems. The cascade M-level inverter consists of (M-1)/2 H-bridges in which each bridge has its own separate DC source. This new inverter (1) can generate almost sinusoidal waveform voltage with only one time switching per line cycle, (2) can eliminate transformers of multipulse inverters used in the conventional static VAR compensators, and (3) makes possible direct connection to the 13.8 kV power distribution system in parallel and series without any transformer. In other words, the power line conditioner is much more efficient and more suitable to VAR compensation and harmonic filtering of distribution systems than traditional multipulse and pulse width modulation (PWM) inverters. It has been shown that the new inverter is specially suited for simultaneous VAR compensation and harmonic filtering.read more
Citations
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References
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Journal ArticleDOI
Control Strategy of Active Power Filters Using Multiple Voltage-Source PWM Converters
TL;DR: In this article, an active power filter with quadruple voltage-source PWM converters was developed, of which the power circuit consists of quadruple-VRS converters.
Journal ArticleDOI
Development of a /spl plusmn/100 MVAr static condenser for voltage control of transmission systems
TL;DR: The Static Condenser (STATCON) as discussed by the authors is a static condenser that is similar to the rotating synchronous condenser (SVC) and has similar output characteristics to those of the SVC.
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TL;DR: In this paper, the authors propose a programmed switching system for converting direct current into alternating current or some other variable current, which employs a number of stages connected in cascade, each stage includes an electrical source or an electrical energy storage unit and switch means adapted to bypass the energy source or storage unit, to interconnect the source or a storage unit with other electrical energy sources or storage units across a load, and to reverse the direction of current flow in the load to apply, for example, a quasi-sinusoidal voltage across the load.
Patent
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Journal ArticleDOI
Principles and Applications of Static, Thyristor-Controlled Shunt Compensators
TL;DR: In recent years, there has been a rapid increase in the number of thyristor-controlled shunt compensators used in industrial and utility systems for dynamic power factor correction and terminal voltage stabilization as mentioned in this paper.